LTC4015_15 Datasheet, PDF (5/76 Pages) Linear Technology – Multichemistry Buck Battery Charger Controller with Digital Telemetry System

LTC4015
Electrical Characteristics The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T_A = 25°C. (Note 2), DV_CC = 3.3V, UVCLFB = 1.5; CELLS1 = INTV_CC; EQ,
MPPT, CELLS0, CELLS2, CHEM0, CHEM1 = 0; RT = 95.3k; R_CCREF = 301k, R_NTCBIAS = R_NTC = 10k; BATSENS = CSN = CSP; DRV_CC = INTV_CC;
SYS = CLP = CLN. Conditions: Charging; V_IN = 12V, SYS = 12V, BATSENS = 7.4V …..Battery Only; V_IN = 0V, SYS = 8.4V, BATSENS = 8.4V
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP MAX
UNITS
INTV_CC Regulator (SYS is Supply Pin for This Regulator)
V_INTVCC
Internal Regulator Output Voltage
Load Regulation
V_{INTVCC_CUVLO} INTV_CC Undervoltage Charger Lockout
No Load
I_INTVCC = 50 mA
Rising Threshold
Hysteresis
5
V
1.5
2.5
%
l 4.2
4.3
4.4
V
0.3
V
V_{INTVCC_TUVLO}
INTV_CC Undervoltage Telemetry System
Lockout
Rising Threshold
Hysteresis
l 2.75
2.85 2.95
V
0.12
V
DRV_CC INPUT (External Supply or Supplied by INTV_CC)
V_DRVCC
DRV_CC Supply Voltage
DRV_CC Undervoltage Lockout
Rising Threshold
Hysteresis
4.3
5.5
V
l 4.1
4.2
4.3
V
0.3
V
Battery Charger
(All Chemistries)
I_CHARGE
Battery Charge Current Range,
Battery Charge Current Resolution
Peak Low V_CSP Charge Current
I_BATSENS + I_CSP + I_CSN
Lithium-Ion/Lithium Polymer Battery Charger
V_CSP > 2.6V (Note 10)
V_CSP < 2.4V
Charger Suspended (Telemetry Active)
V_IN, V_SYS = 12V, V_BATSENS = 7.4V
V_IN, V_SYS = 35V, V_BATSENS = 34V (9 Cells)
1 – 32
1
7.0
110
200
mV/R_SNSB
mV/R_SNSB
mV/R_SNSB
µA
µA
Lithium-Ion/Lithium Polymer Programmable, CHEM1, CHEM0 = [LL] (Note 9)
Li-Ion Charge Voltage Max DAC Setting Code 11111 (Note 11)
4.2
V/Cell
Li-Ion Charge Voltage Min DAC Setting Code 00000 (Note 11)
3.8125
V/Cell
Li-Ion Charge Voltage DAC LSB
12.5
mV
Li-Ion Recharge Voltage
Percent of Charge Voltage
97.5
%
Charge C/x Termination Setting
V_CSP–CSN (I²C Termination Option)
3.2
mV
Lithium-Ion/Lithium Polymer Fixed 4.2, 4.1, 4.0 Charge Voltage, CHEM1, CHEM0 = [HH,LZ,ZL] (Note 9)
4.2V Fixed Li-Ion Charge Voltage
CHEM1,0 = [H,H] (Note 11)
4.200
V/Cell
4.2V Fixed Li-Ion Recharge Voltage
CHEM1,0 = [H,H]
4.095
V/Cell
4.1V Fixed Li-Ion Charge Voltage
CHEM1,0 = [L,Z] (Note 11)
4.100
V/Cell
4.1V Fixed Li-Ion Recharge Voltage
CHEM1,0 = [L,Z]
4.000
V/Cell
4.0V Fixed Li-Ion Charge Voltage
CHEM1,0 = [Z,L] (Note 11)
4.000
V/Cell
4.0V Fixed Li-Ion Recharge Voltage
CHEM1,0 = [Z,L]
3.900
V/Cell
Lithium-Ion/Lithium Polymer, CHEM1, CHEM0 = [LL, HH, LZ, ZL] (Note 9)
Low Battery Precharge Threshold
Charge Voltage = 4.2V
2.85
V/Cell
Low Battery Precharge Hysteresis
Charge Voltage = 4.2V
50
mV/Cell
Low Battery Precharge Current
Max Charge Time
I_CHARGE Set to 32 mV/R_SNSB
3
mV/R_SNSB
18.2
hrs
Charge Termination Timer
(Default Termination)
4
hrs
4015f
For more information www.linear.com/LTC4015
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